Greer Amps Mizuki Blue overdrive features two JFET gain stages

October 14, 2025 · 2 sources

Greer Amps has detailed the Mizuki Blue, a overdrive pedal built around two JFET gain stages, priced at $199¹. Guitar Pedal X reported the pedal on October 14, 2025, noting it was sold out on Greer's webstore and that UK dealer stock was expected on November 21².

Greer describes the circuit as "designed to replicate the feel and dynamics of two cascading tube gain stages," with one stage driving the other¹. The maker says JFET transistors "were created to emulate the warm, responsive character of tubes in a solid-state format"¹. Guitar Pedal X noted that the pedal's description does not identify which amp or tube variety it is set to replicate².

Controls are Volume, Gain and Tone². Greer says the three-knob layout suits "everything from jazz and country to classic and hard rock," and that the pedal stacks with other drives¹. Guitar Pedal X read a particular purpose in that stacking, writing that it appears intended "to add saturation and harmonics"².

Greer says the pedal can run at up to 18 volts "for more headroom and output volume"¹. The maker also warns that internal trim pots set the JFET bias and "should NOT be adjusted, as doing so will cause the pedal to cease working or function improperly"¹.

Guitar Pedal X reported the pedal as sold out on Greer's webstore but possibly available from dealers, with Andertons quoting stock due on November 21². The report called $199 Greer's usual price point and described the pedal as typical of the maker's three-knob overdrives².